Answer:
The correct answer is option D.
Step-by-step explanation:
The ethical questions refer to the questions, which are based upon what is morally right and what is wrong. These are the queries, which usually comprise works like ought or should in it. These aspects consider many problems and their solutions, however, without any kind of issue in it.
In all the mentioned options, there is a sense of ought or sought, and deals with moral or integrity, and is concerned with whether any action is imparting any harm to the animal or the environment surrounding us.